Fairfax, SD Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Fairfax, SD in one place.
A chance of rain showers. Partly sunny, with a high near 69. North northeast wind 5 to 10 mph. Chance of precipitation is 40%.
Local Weather Overview
This forecast page for Fairfax, SD is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 14, 2026 12:32 AM CDT.
The active forecast window currently covers Apr 15 to Apr 20, 2026 for Fairfax, SD.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 20, 2026
- Latest sync
- Apr 14, 2026 12:32 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Fairfax
Thursday looks like the warmest upcoming period in Fairfax at 83 degrees F.
Saturday Night is the coolest period ahead with temperatures near 24 degrees F.
The strongest winds are forecast for Friday at about 25 to 35 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 14, 2026 12:32 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KLNX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers before 1am. Mostly clear, with a low around 43. Southeast wind 5 to 10 mph. Chance of precipitation is 40%.
Sunny, with a high near 83. South southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Partly cloudy, with a low around 45.
A slight chance of rain showers after 7am. Partly sunny, with a high near 53.
A slight chance of rain showers before 7pm, then a chance of rain and snow showers. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
A chance of snow showers before 1pm. Partly sunny, with a high near 52. Chance of precipitation is 30%.
Partly cloudy, with a low around 24.
Sunny, with a high near 63.
Partly cloudy, with a low around 41.
Sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 15
|
Chance Rain Showers
|
69°F |
5 to 10 mph
NNE
|
|
Wednesday Night
Apr 15
|
Chance Rain Showers
|
43°F |
5 to 10 mph
SE
|
|
Thursday
Apr 16
|
Sunny
|
83°F |
10 to 20 mph
SSW
|
|
Thursday Night
Apr 16
|
Partly Cloudy
|
45°F |
15 to 25 mph
S
|
|
Friday
Apr 17
|
Slight Chance Rain Showers
|
53°F |
25 to 35 mph
NW
|
|
Friday Night
Apr 17
|
Chance Rain And Snow Showers
|
28°F |
20 to 35 mph
NW
|
|
Saturday
Apr 18
|
Chance Snow Showers
|
52°F |
20 to 30 mph
NW
|
|
Saturday Night
Apr 18
|
Partly Cloudy
|
24°F |
5 to 30 mph
NW
|
|
Sunday
Apr 19
|
Sunny
|
63°F |
10 to 15 mph
SW
|
|
Sunday Night
Apr 19
|
Partly Cloudy
|
41°F |
15 mph
SSE
|
|
Monday
Apr 20
|
Sunny
|
76°F |
15 to 20 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fairfax.